Santiago-Perez D.G.,Autonomous University of the State of Morelos |
Santiago-Perez D.G.,University Jose Marti Perez Of Sancti Spiritus |
Trallero-Giner C.,University of Habana |
Trallero-Giner C.,Federal University of Sao Carlos |
And 4 more authors.
Journal of Applied Physics
A detailed analysis of the uncoupled polar optical-phonon modes with cylindrical symmetry and translational invariance along the wire in core/shell semiconductor nanowires is presented, within the framework of a phenomenological continuum model. The effects of strain on confined longitudinal optical (LO) and transverse optical (TO) core-like and shell-like phonon modes in GaAs/GaP quantum wire are considered. The reported TO splitting together with LO confined modes may be used to extract information on the core and shell nanostructures, by comparison to Raman and infrared spectroscopy techniques. Employing recently reported experimental results on GaAsP/GaP core-shell nanowires, the ratio of the LO and TO Grüneisen mode parameters is determined. © 2012 American Institute of Physics. Source